Sulfur dyes.



UNITED STATES PATENT OFFICE.

KARL PAUL GBALERT, MAX BUFF, AND JOSEPH FLASHSLAENDEB, 0F ELBEBFEIQD, GERMANY, esszenoes T0 SYNTHETIC PATENTS 00., me, OF NEW YORK, N. Y., A

CORPORATION OF NEW YORK.

No Drawing.

777814 filed July 8, 1913, and relates to the manufacture and production of new and valuable brown sinlfnr eolors which are ohtained by treating; with alkali polysullids and copper or copper conniounds phthaloperinone compounds having most probably the formula in Which R stands for a naphthalene ring. The new dyes are after beine dried and pulverized dark powders soluble in a solu tion of sodium sulfidgenerally with a yellowislrbrmvn to ted-brown coloration and soluble in concentrated sulfuric acid with a brown coloration. The dye cotton in bloomy brown shades distinimished by their fastnese to light.-

In order to illustrate the new process more fully the following example is Qileli. the parts being by Weight: 30 parts of crystallized sodium sulfid, 4-" parts of sulfur. 10 parts of copper sulfate. '20 pal-H phthaloperinone having most following formula are heated during to l hows Specification of Letters latent.

Application filed December 6, 1913.

p robabij: the

ST-ILFUR DYES.

Serial No. 805,057.

220 C. The melt is powdered and is then ready for use. The dyestuti is a dark powder soluble in a sodium sulfid solution with a reddish-brown coloration. It is soluble in concentrated sulfuric acid with :1 brown coloration and dyes cotton in pure reddish-- brown shades fast to light.

The above mentionedquantities of sodium sulfid find of enlfur as well as the tempera ture and the duration of the reaction can be varied within u'ide limits.

Similar dyestuffs are obtained by using other of the above mentioned products. such as perimidvlbenzoic acid. halogenphthal- (IIT'QI'lllOllfb a. etc.

\Ye claim:

1. The new sulfur dyes obtained from phthnhniei'inone compounds having most probably the formula:

'mtm ilnlm'ii' IH'UWH shades fast to light.

su wt-inliall 11 dewribed.

The new \lli'dll dye obtained from phihalopcrinune lowing most probably the toi'iiililai hit-r. wil li ing dried and pulrerized Patented Oct. 6, 1914.

d iln-omopht-ha loperinone a dark powder soluble in a Sodium sulset our hands In the presence of two subfid solution with a reddish-brown colorscribing witnesses.

r-tion anisoluble in concentrated sulfuric KARL PAULYGRILERT. [11.15.] acid with a brown coloration; dyeing u-n- MAX BUFF. -n. s.] mordanted cotton in pure reddish-brown i v JOSEPH FLASHSLAENDER. [LBJ- -hades fast to light, substantially 'as de- Vimesses: acribod.

ALBERT NUFER, In testimony whereof We have hereunto FRANCES NUFER.

a dark pew'der fid solution with In testimony whereof we have hereunto Correction in LettemPaten-t N0, 1.I L2 ,445.

set our hands in the presence of two sub scrlbmg wltnesses.

soluble in a sodium sula .reddlsh-bro'wn coloretion andso'luble 1n concentrated sulfuric KARL PAULGRZLERT. [LS-1 acid with a brown coloration; dyeing un- MAX BUFF -[L. s.]

\ mordanted cotton in pure reddish-brown JOSEPH FLASHSLAENDER. [1,. s.]'

-hades fast to light, substantially as de- WVitnesses':

ALBERT N UFER, 'F'RANCES NUFER.

It is hereby certified that in Letters Patent No; 1,112,445, granted Oetbbexf. 6, "1914, upon the application of Karl Paul Griilert, Max Bufl, and Joee'ph F laehslaender, of Elberfel'd, Germany, fer an improvement in Sulfur-Dyes, the name of the third-mentioned patente'e was erroneously written and printed as Jbseph Flasheleender, wherea; said namefshould have been Written and printedes Jeseph Flachslaender; and that thesa'id LettersPatent should, he read with this certaction therein that the Same may'eonferm t0 the record ufthe case inthe Patent Ofiice.

Signed and s'ealed this 26th day of January, A. D., 1915:

R. F. WHITEHE'AD,

Acting Commissa'aher of Patents.

[sEALLJ laender, of Elberfeld, Germany,

Correction in LettersPatent No, 1

It is hereby certified that in- Letters Patent No; 1,112,445, granted October. 6,

1914, upon the application of Karl Paul Griil'ert, Max Bufl, and Joseph Flachb for an improvement in buIfur'Dyesf the name of the third-mentioned patentee was erroneously written and printed as faloseph Flash q laender, wherea said name should have been written and printed as Jbsepk Flachslae nder: and that the said Letters Patent should be read with this correction therein that the same may confbrm to the record of the case in the Patent Oifice.

R. F. WHITEHEAD,

Signed andealed this 26th day of January,

[sEALLI I Acting Commissioner of Pdtents. 

